/ Dictionary / Index B boat tail: Meaning and Definition of Find definitions for: boat' tail" Pronunciation: [key] — Auto. Auto. a body style in which the rear end of the vehicle tapers to a point or a cone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. boatswain's pipe boat-tailed grackle Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language